Nothing can’t be dried – heat pump dryer in roses drying application
About roses
Roses not only have more ornamental value, but also are a kind of precious medicinal materials as beautifying and unblocked the meridians. It has significant effect on cardiovascular and gynaecological diseases.
Roses, which only bloom once a year and are difficult to store, have become a commercial high- value consumer goods.
Traditional rose-drying process
Common roses drying process include natural dry and hot air drying.
Natural drying can save the cost, but climate influence is an obviously disadvantages. In rainy weather, roses are easy easily get mildewed the shelf life is short.
Hot air drying is more energy consumption, Moreover, the hygiene of drying process cannot meet the requirements of food production.
Close-loop heat pump dehumidifying and drying machine can keep well the rose’s flower bud original color, flavor and nutrition, simultaneously, collect roses water then, Extracted precious rose essence.
Heat pump dryer in roses drying process
The roses drying process is strict.Close-loop heat pump dryer can keep well the rose’s flower bud original color, flavor and nutrition.
Close-loop heat pump dryer absorb the heat from the moisture in exhaust hot air, and then release these heat in condenser to heat the drying air again. Only compressor power is request that means power consumption is few. Another advantage is that it is available to collect rose’s water, and then, extracted precious rose essence during drying process.
Rose Heat Pump Drying Process
1st The harvesting and Airing of roses
The fresh roses flower, which are picked up within 12 hours with bright color and uniform size are best for drying. Airing process should be done before drying.
2nd Placing in trays and dryer for roses
Place the selected roses evenly on the trays in layers. The thickness of each layer of roses shall not more than 100mm. Petals uniformly upward be sure not crush each other. Please take care to the trolley which is load roses trays when put into dryer oven.
3rd Roses drying process
Following technical request are the keys to drying rose
- Starting drying at low temperature
- Specify Shape and color
- Dehydration and improving taste
An optimizing process operation for rose heat pump drying
|
Stage |
Temperature |
Humidity |
Time |
|
01 |
45℃ |
30% |
2h |
|
02 |
50℃ |
20% |
6h |
|
03 |
58℃ |
15% |
12h |
|
04 |
68℃ |
10% |
4h |
